Vulnerability Description
The Notification WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/src/classes/Utils/Settings.php file which made it possible for attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 7.2.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bracketspace | Notification | <= 7.2.4 |
Related Weaknesses (CWE)
References
- https://github.com/BigTiger2020/word-press/blob/main/Notification.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/notification/tags/7.2.4/src/classes/UPatchThird Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39340Third Party Advisory
- https://github.com/BigTiger2020/word-press/blob/main/Notification.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/notification/tags/7.2.4/src/classes/UPatchThird Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39340Third Party Advisory
FAQ
What is CVE-2021-39340?
CVE-2021-39340 is a vulnerability with a CVSS score of 4.8 (MEDIUM). The Notification WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/src/classes/Utils/Settings.ph...
How severe is CVE-2021-39340?
CVE-2021-39340 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39340?
Check the references section above for vendor advisories and patch information. Affected products include: Bracketspace Notification.